Granted Patent
Utility
US 6,566,563 · App. 09/720,890
Method for producing compounds with terminal OH groups
Inventors:
Alfred Westfechtel, Roland Gruetzmacher, Elke Grundt
Patented Case
View Patent ↗
Granted: May 20, 2003
Filed: May 4, 2001
Inventors
Alfred Westfechtel
Roland Gruetzmacher
Elke Grundt
Assignee (at issue)
Cognis Deutschland GmbH & Co. KG
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.